20563375

素因数分解:

$5^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:424

約数の個数: 32

約数和(自身を含む): 29832192

約数和(自身を除く): 9268817

約数列:

[1, 5, 7, 25, 35, 71, 125, 175, 331, 355, 497, 875, 1655, 1775, 2317, 2485, 8275, 8875, 11585, 12425, 23501, 41375, 57925, 62125, 117505, 164507, 289625, 587525, 822535, 2937625, 4112675, 20563375]

約数ペア:

[(1, 20563375), (5, 4112675), (7, 2937625), (25, 822535), (35, 587525), (71, 289625), (125, 164507), (175, 117505), (331, 62125), (355, 57925), (497, 41375), (875, 23501), (1655, 12425), (1775, 11585), (2317, 8875), (2485, 8275)]